1.

The angle A, B, C and D of a quadrilateral are in the ratio 1 : 2 : 4 : 5. If bisectors of ∠C and ∠D meet of O, the ∠COD = __________.

Answer» The angle A, B, C and D of a quadrilateral are in the ratio 1 : 2 : 4 : 5. If bisectors of ∠C and ∠D meet of O, the ∠COD = __________.


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